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Finding the Fourth Proportional to 138,954.31, 191,823.07 and 93,092.92

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Solution

The fourth proportional to 138,954.31, 191,823.07 and 93,092.92 is: 128,512.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,954.31 : 191,823.07 = 93,092.92 : x
  2. Step 2: Convert to fraction form
    138,954.31/191,823.07 = 93,092.92/x
  3. Step 3: Cross multiply
    138,954.31x = 191,823.07 × 93,092.92
  4. Step 4: Simplify right side
    138,954.31x = 17,857,369,709.66
  5. Step 5: Solve for x
    x = 17,857,369,709.66/138,954.31
  6. Step 6: Final answer
    x = 128,512.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.